Built-up insulator.



L. STEINBERGER. BUILT UP INSULATOR.

APPLIUATION FILED 00T.Z8, 1905.

PATENTED DEC. 25, 1906.

2 SHEETS-SHEET 1.

W/TNESSES: INVENTOH ATTORNE f mkind used for currents of high potential and- UNITED STATES PATENT oFFIoE.

Louis STEINBERGER, on. NEW YORK, N. Y. BUILT-UP INSULATOR- Specification of Letters Patent.

I Application filed October 28, 1905. Serial Na 284,794.

Patented Dec. 25, 1906.

To allwhomhit may concern.- I Be it known that 'I,'LoU1s SrEIN'BERGER, I citizen of the: nited States, and a resident l of thecity of New York, borough of Brook- 5 l in the county of Kings and btate of New rk, have-invented a new and Improved Built-UIp Insulator, of which the following is. a full, c ear, and exact description. My invention'relates to insulators of the.

nular beads 21 22, between nular bead 18 of' the bracing-l1ood 16 projects. The bracing-hood l6 is provided "with' annnlar steps 23, integral 'therewith. The middle hood 19 is further provided with annular steps 19 19 concentric with each other. A bracing-hood 24 is stepped to fit the top of the hood 19, and is adapted to rest thereupon. The bracing-hood .24 is further provided with an annular step which the anin, which it is desirable to secure the greatest possible dielectric. quality combined with a maximum of physical strength and a minimum of materials and wei ht.

Among the furtherob ects accomplished bymy invention I enable the operator to readily, take the same partially apart without interrupting the service,so as to examine the interior portions of the insulator for the purpose of c caning it or for coating the exposed surfaces or to replace the oil used for lncreasing the insulation.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of-reference. indicate corresponding parts'in all the figures. v

Figure. 1 is a vertical section through my improved insulator, taken upon the line 1' 1 of Fig. 23 looking in the direction of the arrow. Fig. 2 is a fragmentary lan view of the insulator, the uppenhood Eeing partly broken away and Fig. 3 is a horizontal sec- 25. Thetop hood 26 is provided with an nular .beads 27 28, disposed upon opposite sides of an annular bead 29, which constitutes the extreme outer edge of the bracing-hood 24that is to say, the annular bead 29 fits intermediate of, the annular beads 27 28 and braces a portion of the hood 26. This-hood is provided with a etticoat 29 and is further provided with at eaded cylindrical aperture 30, encircling the threaded stem 5; The hood 26- terminates in a head 31, which is provided with a central slot 32 and with an annular slot 33 in the manner well known in the art.

. In assemblin the insulator the threaded stem 5 may be i irst mounted upon the crossarm 4 and secured firmly in position by means of the nuts 8. The threaded sleeve 9 is next secured into the stem. The hoo 12 is now screwed down until it rests upon the head 11 ofthe sleeve 9. 2 Next the bracmg-hood 16 is screwed into potion upon the line 3 3-of Fig. '1 looking in the sition and this is followed by the middle hood 3 5 direction ofthe arrow and showing thel'ower' 19 and the bracing-hood 24, these last-men- 'hood encircling the supporting-pin." tioned hoods 'beingscrewed down in succes- A cross-arm is shown at 4, and mounted sionl Lastl the tophood is lifted into upon it, isa threadedstem 5, of metal, proposition an rested, so that the concentric vided with, an enlarged portion 6,, serving annular beads 27 28 are,' pon oppositesides 0 as a"base,. and also with a threaded portion of-the annular beads 29, the central portion 7,, projecting below; the cross-arm 4 and enof the hood 26 meanwhile resting upon the gaged by nuts 8. Asleeve 9, made of metal central portions of the bracing-hood 24. If

and threaded internally, is provided exterdesired, the hoods may be assembled upon nallywith steps 1-0 and is also provi'ded with the pin before the latter is secured upon the a headfll, the latter being rounded and incross-arm. The oil-channels 17 are partegraI-with the body of the sleeve. Resting tially filled with oil. This is done preferably upon the head 11 is the lower hood 12', 0- after the insulator is partly assem led u on vided with petticoat's 13 14 and with annular the cross-arm, but maybereadily done a ter steps 15 15, leading upward from an annular shoulder 15*. Resting upon the lower hood 12 is a bracing-hood 16, providedtvithan annular ortion the operatordesires to examine the oil-channels atany time for the purpose of replenish- 17, adapted to hold oil, as the Oil or of knowing its condition, he indicate This racing-hood 1'6'terminates climbs up the cross-arm 24 and turns the at its' outer surface in an annular bead 18. threaded sleeve 9 so as to screw the same The middle hood, is rshown at 19 and is-downward. The lower hood 12 does not provided with a petticoat 20 and with an-i move downward immediately, but may be '24 and also with an annular oil-channel osition from the top of the complete assemblage is made. .If now hoods may be so adjusted that the upper of hood 26 rests partly upon the upper en the stem. For this purpose the cylindrical aperture 30 is made of such size so asto loosely encircle the upper end of the stem.

It will be noted that each annular bead 18 and 29 is so fitted into the hood 19 or 26.

above it as to make a joint which is practically air and water tight.

It will also be noted that the danger of surface leaka e is greatly reduced and that in an insulator parts are readily accessible to the operator no matter what may be the size or carrying capacity'of the insulator. A single operator canhandle insulators of this type independently of their aggregate weight when in position. For convenience 1 designate the lower hood 12, the middle hood 19, and the upper hood 26 as protecting hoods in order to distinguish them from the supporting-hoods l6 and 24.

It will be noted that my invention enables me to build insulators having hoods of far greater diameter than could possibly be made for practical uses if built without bracing members, and inasmuch as my hoods and bracing members are separable should any of the parts. become destroyed they may be readily replaced and the full efliciency of the insulator thus restored.

I do not limit myself to-the use of any particular material from which to construct my insulator, but prefer to use electrose, nor do I limit myself to the particular form nor to-the exact construction of any of the parts, as herein shown, nor to the use in every instance of a filling insulating material for the interior of the bracing member, as variations in form and construction will readily occur to those skilled in the art without departing from the S00 e and spirit of my invention.

Having t us described my invention, I

claim as new and desire to secure by Letters 1. An insulator,-comprisinga protectinga hood provided with a central aperture, a stem disposed partially within said aperture, and a supporting-hoodmounted upon said stem and provided with ortions engaging said protecting-hood for t e urpose of sustaining a portion of the weight t ereof." I v 2. A built-up insulator, comprising aphiinterme uilt up as above described" all rality of separate protecting-hoods, a plurality of se arate supporting-hoods sandwiched iate of said protecting-hoods and engaging the same, and a supporting-stem common to all of said hoods.

3. An insulator, comprising-a protectinghood provided with a portion for engaging a stem and also provided with steps, a supthose of said protecting-hood, a threaded stem engaging said supporting-hood, and a member mounted upon said stem and en aging said supporting-hood so as tostrengt en the same. 4. A built-up insulator, comprising a protecting-hood, a stem for supporting the same,

porting-hood provided with steps mating and a sleeve mounted upon said stem and provided with ahead en aging a portion of said rotecting-hood fo t e purpose of looking t e latter. i

5. A built-up insulator, comprising a stem provided with a thread, a rotecting-hood provided with a thread an screwed u on said stem, and a sleeve rovided wit a thread and likewise screwe u on said stern,

said sleeve being provided Wit a portion for engaging a ortion of said protecting-hood.

6. A bui t-up insulator, comprising a protecting-hoodprovided with an aperture, a stem engaging said protecting-hood, and a sleeve mounted upon said stem and provided with a portion disposed within said aperture for the purpose of sustaining a part of the weight of said protecting-hood.

, 7. An insulator comprising a hood, and a cup-like bracing member supporting the outer portion of said hood,.said racing member havin a separate insulating material disposed wit 'n its cup-like portion.

8. An insulator, comprising a supporting stem, a hood mounted thereupon and m0vable relatively thereto, anda member mounted upon said stem and adjustable in relation thereto, said member being rovided "with a portion for partially supporting said hood.

- 9. An insulator, comprising a hood vided with a hollow portion, a supportingstem, and a member adjustably mounted upon said support' -stem and provided with a bead engagin sai hollow portion.

- 10. An insu ator, comprisin a 'stem, a

sleeve 'mounted thereupon an adjustable relatively thereto, and aghood mounted directly upon said stem and engpging said sleeveso as to be partially support thereby.

PI'O- 11-. An insulator, comprising a stem, a

bracing-hood mounted thereupon and pro- .vided with a portion extending outwardly,

and a hoodlooselv mounted upon said stem and provided wit a portion engaging said outwardly-projecting portion of said bran-.

1 ins ator, compris" d fii 's p ing-stem, a hood mounts ereupon, a sleeve mounted upon-said stem, and proing oil.

' of said vided with a portion for engagin said hood, said sleeve bemg further provide with steps for preventing surface leakage.

13. An insulator comprising a hood and a cup-like bracing member supporting said hood at a portion spaced from the center thereof and provided with means for retain- .14. An insulator comprising a protecting- .hood, a stem connected therewith, a sup orting member mounted on said stem an engaging said hood at a point substantially midway between said stem and the outer peripheral edge of said hood.

15. An insulator comprising a plurality of contiguous hoods, and a se arate member disposed intermediate of said 'oods, said se arate member resting upon one of said hoo s at a point near the center thereof, andextendin outwardly so as to engage the other oods, at a point farther from its center. y a

16. An insulator comprising a plurality of contiguous hoods and a separate cup-like member resting upon one of said hoods and provided with a cup-likeportion adapted to I :lar

retain oil, and extending obliquely u Ward so as to engage the other of said hoo s at a point substantially midwa between its center and its outer periphera edge.

17. An insulator comprising a stem, a bracing member mounted thereupon and provided with a portion extending obliquely outward and adgpted tohold a liquid insulatmg material, an a hood mounted upon 'said stem and provided with a portion engaging iaid extending portion of said bracing memer. e 18. Aninsulator comprisin vided with an extending hoo member mounted below said hood and provided with portions reachin obliquely. out ward so as to support said ood at a point remote from the center thereof.

- 19. The combination of a stem, a sup orta portion proand a bracing ing member mounted thereupon, and a oodloosely" engaging said supporting member andheld th ereupon by its weightonly.

20. The combination of a hood provided with an annular bead, a stem for partially supporting said hood, and a supporting member connected with said stem and provided with an annular bead.

21. The'combination of a hood provided with two annular beads concentric'to each other, and a supporting member provided with an annular portion engaging said hood intermediate of said annular beads.

portion'engaging said annu 22. The combination of a hood provided with an'annular bead, and a hollow member provided with a (portion for retaining oil, and

by said sleeve, and partially supported thereupon.

24. In an insulator, the combination of a hood mounted thereupon,- a sleeve mounted upon said stem and engaging said hood for the purpose of partially supporting the same, said sleeve being provided with steps.

25. The combination of a threaded stem, a supporting member mounted thereupon, and a hood loosely engaging said supporting mellnber and held thereupon by its weight on y. I

26.An insulator comprising a hood pro vided with a central body portion, and a cuplike bracing member engaging said body portion, and also engaging said extended portion at a portion intermediate of said body portion and the peripheral edge of said extended portion, and means for mounting said body portion and said cup-like bracing member.

27. An insulator comprising a central portion having an extended portion, and a separate supporting member engaging said central body portion and also engaging said extended portion, the point of engagement with the latter being approximately midway between the center of said body portion and the outer peripheral edge ofsaid extended portion, and means for mounting said body portion and said separate supporting mem- 28.' An insulator comprisinga supportingstem, a hood engaging the same, a member engaging said stem and provided with an extended portion for directly engaging said hood at a point substantially midway between its center and its peripheral edge.

29. An insulator comprising a supportingstem, a hood engaging the same, and a member enga 'ing'said stem and provided with a ortiiaon ior partially supporting the said 00 In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

- LOUIS STEINBERGER. Witnesses WALTON HARRISON, EVERARD. B. MARSHALL. 

